Using the molecular beam, she released gas particles into the plasma.

"Well, according to the gas particles, the plasma is rotating as a mass."

So you can imagine that a gas particle will move in a straight line until some force acts on it.

As they do their cumulative gravity increases and allow them to further collect gas particles.

That's surprising; I had supposed the gas particles might have been held in place by such fields.

Now a door in the container walls is opened to allow the gas particles to mix between the containers.

Consider Maxwell's set-up, but with only a single gas particle in a box.

Here is the average mass of gas particles within the star.

The speed of a gas particle is proportional to its absolute temperature.

It was only a diffuse stream of gas particles, drifting in their path.